I have an 07 Silverado VMax with the L76, that is my personal vehicle. I've done a complete tune on it and it runs great, but the VVT is intriguing to me. I've never messed with that stuff before, but I understand the basics of advancing and retarding the camshaft. And, if I've read correctly the cam phaser has a 52* range of influence, is that correct? It seems like I could make substantial gains by tweaking the tables. But I'm afraid I'll screw something up. Does anyone have any advice or pointers? They would be much appreciated!